1-32. VARIOUS PROTECTIONS
1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENTION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas
temperature.
221°F (105°C) 212°F (100°C) 239°F (115°C)
When the discharge temperature becomes higher than Temperature
Ⅰ
,the compressor frequency
is decreased 10rps, and it continues to decrease the frequency for 10rps every 120 seconds until
the temperature becomes lower than Temperature
Ⅰ
.
When the discharge temperature becomes lower than Temperature
Ⅱ
,
the control of the compressor frequency is released.
When the discharge temperature becomes higher than Temperature
Ⅲ
,
the compressor is stopped and the indoor unit LED starts blinking.
( Table 29 : Discharge temperature over rise prevention control / Release temperature )
Temperature
Ⅰ
Temperature
Ⅱ
Temperature
Ⅲ
The compressor frequency is controlled so that the outdoor unit input current does not exceeds
the current limit value that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
( Table 30 : Operation value / Release value Ta: Outdoor temperature )
2. CURRENT RELEASE CONTROL
[Heating]
870/840rpm 780/750rpm 520/520rpm 350/350rpm 200/200rpm
68.0°F (20°C)
68.0°F (20°C)
<
Ta
=
122°F (50°C)
<
Ta
=
14.5A/14.0A
16.5A/16.0A
19.5A/19.0A
Outdoor unit fan speed (UP / LO)
Ta <
53.6°F(12°C)
53.6°F(12°C)
<
Ta
=
<
122°F (50°C)114.8°F(46°C)
<
Ta
=
<
[ Cooling ]
850/800rpm
780/750rpm
520/520rpm
350/350rpm
280/280rpm
480/ 0rpm
400/ 0rpm
280/ 0rpm
13.5A/13.0A
13.5A/13.0A
11.0A/10.5A
10.0A/9.5A
10.0A/9.5A
10.5A/10.0A
12.5A/12.0A
9.0A/8.5A
17.5A/17.0A
19.0A/18.5A
16.0A/15.5A
15.5A/15.0A
14.5A/14.0A
16.5A/16.0A
8.0A/7.5A
5.0A/4.5A
6.0A/5.5A
13.0A/12.5A
12.5A/12.0A
13.5A/13.0A
9.5A/9.0A
6.5A/6.0A
9.0A/8.5A
10.0A/9.5A
Outdoor unit fan speed (UP / LO)
12.5A/12.0A
14.5A/14.0A
12.0A/11.5A
15.0A/14.5A
19.5A/19.0A 19.0A/18.5A
01-24
114.8°F (46°C)104.0°F(40°C)
<
Ta
=
<
104.0°F (40°C)100.4°F(38°C)
<
Ta
=
<
100.4°F (38°C)87.8°F(31°C)
<
Ta
=
<
87.8°F (31°C)66.2°F(19°C)
<
Ta
=
<
66.2°F (19°C)55.4°F(13°C)
<
Ta
=
<
55.4°F (13°C)44.6°F(7°C)
<
Ta
=
<
44.6°F (7°C)32.0°F(0°C)
<
Ta
=
<
32.0°F (0°C)23.0°F(-5°C)
<
Ta
=
<
23.0°F (-5°C)14.0°F(-10°C)
<
Ta
=
<
14.0°F (-10°C)5.0°F(-15°C)
<
Ta
=
<
5.0°F (-15°C)Ta
<
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